Here we are in 2015... (Happy New Year for All)
First post of this year is a tip about company called 'Ravello Systems', I don't if you guys heard about that, but they implements nested virtualization in the public cloud to self service desing/deploy environments it's very interesting tool.
"Fast cloud-based dev/test, training and demo environments without migration"
"With Ravello's unique Cloud Application Hypervisor developers, devops & IT replicate on-premise production environments in any public cloud for development"
References (more info):